Lattice LP filtering for noise reduction in speech signals
نویسندگان
چکیده
We present a simple yet effective algorithm for noise reduction of speech signals using a lattice LP filter. Based on previous investigations and a theoretical analysis of the lattice filter parameter estimation we introduce an improved parameter estimation algorithm that takes into account the non-stationary nature of speech and expected noise signals, yielding a good suppression of stationary and slowly time-varying noise. The algorithm has zero delay for the speech signal, promoting its application for telephony or hearing aids. No additional or explicit noise estimation algorithm is needed.
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